Problem 1
Provide a short answer to each question. What is the domain of the function ƒ(x)=1/x? What is its range?
Problem 1
Determine whether each statement is true or false. If false, explain why. Because x-1 is a factor of ƒ(x)=x6-x4+2x2-2, we can also conclude that ƒ(1) = 0.
Problem 1
Fill in the blank(s) to correctly complete each sentence. A polynomial function with leading term 3x5 has degree ____.
Problem 2
Provide a short answer to each question. What is the domain of the function ? What is its range?
Problem 3
Fill in the blank(s) to correctly complete each sentence. The highest point on the graph of a parabola that opens down is the ____ of the parabola.
Problem 3
Use the graph to solve each equation or inequality. Use interval notation where appropriate. 7x(x - 1)(x - 2) = 0
Problem 3
Graph each quadratic function. Give the vertex, axis, x-intercepts, y-intercept, domain, range, and largest open intervals of the domain over which each function is increasing or decreasing. ƒ(x)=-3x2-12x-1
Problem 3
Fill in the blank(s) to correctly complete each sentence, or answer the question as appropriate. In the equation y = 6x, y varies directly as x. When x=5, y=30. What is the value of y when x=10?
Problem 3
Determine whether each statement is true or false. If false, explain why. For ƒ(x)=(x+2)4(x-3), the number 2 is a zero of multiplicity 4.
Problem 4
Use the graph to solve each equation or inequality. Use interval notation where appropriate. 7x(x - 1)(x - 2) < 0

Problem 5
Determine whether each statement is true or false. If false, explain why. A polynomial function having degree 6 and only real coefficients may have no real zeros.
Problem 5
Provide a short answer to each question. What is the equation of the vertical asymptote of the graph of y=[1/(x-3)]+2? Of the horizontal asymptote?
Problem 5
Using k as the constant of variation, write a variation equation for each situation. h varies inversely as t.
Problem 5
Use the graph to solve each equation or inequality. Use interval notation where appropriate. 7x(x - 1)(x - 2) > 0
Problem 5
Fill in the blank(s) to correctly complete each sentence. The vertex of the graph of ƒ(x) = x2 + 2x + 4 has x-coordinate ____ .
Problem 6
Use the graph to solve each equation or inequality. Use interval notation where appropriate. 7x(x - 1)(x - 2) ≥ 0
Problem 6
Determine whether each statement is true or false. If false, explain why. The polynomial function has three variations in sign.
Problem 7
Solve each problem. If y varies directly as x, and y=20 when x=4, find y when x = -6.
Problem 7
Provide a short answer to each question. Is ƒ(x)=1/x2 an even or an odd function? What symmetry does its graph exhibit?
Problem 7
Use synthetic division to perform each division. (x3 + 3x2 +11x + 9) / x+1
Problem 7
Use the graph to solve each equation or inequality. Use interval notation where appropriate. 2(x-2) / {(x-1)(x-3)} = 0
Problem 7a
Solve each problem. During the course of a year, the number of volunteers available to run a food bank each month is modeled by , where between the months of January and August. Here x is time in months, with x=1 representing January. From August to December, V(x) is modeled by . Find the number of volunteers in each of the following months.
January
Problem 7b
Solve each problem. During the course of a year, the number of volunteers available to run a food bank each month is modeled by , where between the months of January and August. Here x is time in months, with x=1 representing January. From August to December, is modeled by . Find the number of volunteers in each of the following months.
May
Problem 7c
Solve each problem. During the course of ayear, the number of volunteers available to run a food bank each month is modeled by where between the months of January and August. Here x is time in months, with x=1 representing January. From August to December, is modeled by . Find the number of volunteers in each of the following months.
August
Problem 7d
Solve each problem. During the course of a year, the number of volunteers available to run a food bank each month is modeled by , where between the months of January and August. Here x is time in months, with x=1 representing January. From August to December, is modeled by . Find the number of volunteers in each of the following months.
October
Problem 7e
Solve each problem. During the course of a year, the number of volunteers available to run a food bank each month is modeled by , where between the months of January and August. Here x is time in months, with x=1 representing January. From August to December, is modeled by . Find the number of volunteers in each of the following months.
December
Problem 7f
Solve each problem. During the course of a year, the number of volunteers available to run a food bank each month is modeled by , where between the months of January and August. Here x is time in months, with x=1 representing January. From August to December, is modeled by . Find the number of volunteers in each of the following months. Sketch a graph of for January through December. In what month are the fewest volunteers available?
Problem 8
Determine whether each statement is true or false. If false, explain why. The product of a complex number and its conjugate is always a real number.
Problem 8
Use the graph to solve each equation or inequality. Use interval notation where appropriate. 2(x-2) / {(x-1)(x-3)} < 0
Problem 8
Provide a short answer to each question. Is ƒ(x)=1/x an even or an odd function? What symmetry does its graph exhibit?
Ch. 3 - Polynomial and Rational Functions
